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Title: Comparison of Einstein-Boltzmann solvers for testing general relativity

Journal Article · · Physical Review. D.
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [1];  [14];  [15];  [16];  [17];  [18];  [19] more »;  [10];  [14];  [20];  [5];  [21];  [22];  [23] « less
  1. Univ. of Oxford, Oxford (United Kingdom)
  2. Max-Planck-Institut fur Astrophysik, Garching (Germany)
  3. Faculdade de Ciencias da Univ. de Lisboa, Lisboa (Portugal)
  4. Beijing Normal Univ., Beijing (China)
  5. Leiden Univ., Leiden (The Netherlands)
  6. The Univ. of Chicago, Chicago, IL (United States)
  7. KTH Royal Institute of Technology and Stockholm Univ., Stockholm (Sweden); LBL and Univ. of California at Berkeley, Berkeley, CA (United States)
  8. Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de Mexico (Mexico)
  9. Univ. of the Western Cape, Cape Town (South Africa); Alma Mater Studiorum Univ. di Bologna, Bologna (Italy); INAF/IASF Bologna, Bologna (Italy); INFN, Bologna (Italy)
  10. The Univ. of Manchester, Manchester (United Kingdom)
  11. Univ. Grenoble-Alpes, Grenoble cedex (France)
  12. Univ. of Oxford, Oxford (United Kingdom); Cardiff Univ., Cardiff (United Kingdom)
  13. Univ. de Geneve, Geneve (Switzerland)
  14. INAF/IASF Bologna, Bologna (Italy); INFN, Bologna (Italy)
  15. Sun Yat-sen Univ., Zhuhai (China)
  16. Ecole Polytechnique Federale de Lausanne, Lausanne (Switzerland); Institute for Nuclear Research of the Russian Academy of Sciences, Moscow (Russia)
  17. RWTH Aachen Univ., Aachen (Germany)
  18. Durham Univ., Durham (United Kingdom)
  19. Univ. Heidelberg, Heidelberg (Germany)
  20. CEICO, Prague (Czech Republic)
  21. CEICO, Prague (Czech Republic); Univ. of Cyprus, Aglantzia (Cyprus)
  22. Institut d’Astrophysique de Paris, Paris (France); UPMC Univ. Paris, Paris (France); Sorbonne Univ., Paris (France)
  23. Univ. Paris Saclay, Gif-sur-Yvette (France)
+ Show Author Affiliations

We compare Einstein-Boltzmann solvers that include modifications to general relativity and find that, for a wide range of models and parameters, they agree to a high level of precision. We look at three general purpose codes that primarily model general scalar-tensor theories, three codes that model Jordan-Brans-Dicke (JBD) gravity, a code that models f(R) gravity, a code that models covariant Galileons, a code that models Horava-Lifschitz gravity, and two codes that model nonlocal models of gravity. Comparing predictions of the angular power spectrum of the cosmic microwave background and the power spectrum of dark matter for a suite of different models, we find agreement at the subpercent level. Furthermore this means that this suite of Einstein-Boltzmann solvers is now sufficiently accurate for precision constraints on cosmological and gravitational parameters.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231; FG02-13ER41958; SC0009924
OSTI ID:
1503665
Alternate ID(s):
OSTI ID: 1417688
Journal Information:
Physical Review. D., Vol. 97, Issue 2; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Cited By (15)

Testing general relativity in cosmology journal December 2018
Nonlocal gravity. Conceptual aspects and cosmological predictions journal March 2018
Dark energy and modified gravity in the Effective Field Theory of Large-Scale Structure journal April 2018
Nonlinear effective theory of dark energy journal April 2018
Intensity mapping of the 21 cm emission: lensing journal January 2019
Non-linear matter power spectrum without screening dynamics modelling in f(R) gravity journal January 2020
Testing deviations from GR at cosmological scales including dynamical dark energy, massive neutrinos, functional or binned parametrizations, and spatial curvature journal November 2019
Unraveling the effective fluid approach for f ( R ) models in the subhorizon approximation journal February 2019
Dark Energy in Light of Multi-Messenger Gravitational-Wave Astronomy journal December 2018
Do current cosmological observations rule out all Covariant Galileons? text January 2017
Nonlinear Effective Theory of Dark Energy text January 2017
Dark Energy and Modified Gravity in the Effective Field Theory of Large-Scale Structure text January 2017
Nonlocal gravity. Conceptual aspects and cosmological predictions text January 2017
Newtonian approximation and possible time-varying $G$ in nonlocal gravities text January 2019
Non-linear matter power spectrum without screening dynamics modelling in $f(R)$ gravity text January 2020

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS